Tuning water adhesion of superhydrophobic surface by way of facile laser-chemical hybrid process

文献类型： 外文期刊

第一作者： Wang, Qinghua

作者： Wang, Qinghua;Wang, Qinghua;Wang, Huixin

作者机构：

关键词： chemical treatment; laser surface texturing; metallic alloy; superhydrophobic; tunable water adhesion

期刊名称：SURFACE INNOVATIONS （ 影响因子：2.397； 五年影响因子：2.539 ）

ISSN： 2050-6252

年卷期： 2021 年 10 卷 3 期

页码：

收录情况： SCI

摘要： Superhydrophobic surfaces with various water adhesion behaviours have received tremendous attention in both fundamental research and practical applications. In this work, a novel laser-chemical hybrid process was developed to fabricate superhydrophobic surface with both low and high water adhesion. Periodic cross-hatch micro-bulge arrays were fabricated on aluminum alloy surface by way of nanosecond laser irradiation. After surface chemical treatment, the laser-chemical treated surface showed either superhydrophobicity with low water adhesion using silane treatment only, or superhydrophobicity with high water adhesion using both silane treatment and sodium chloride (NaCl) treatment. The change of water adhesion on the laser-chemical treated superhydrophobic surface was attributed to the simultaneous decrease of surface energy and increase of attraction between the water droplet and sodium chloride salt. This approach could provide a novel but simple solution to tune the water adhesion of superhydrophobic metallic surfaces, thus benefiting related research and industrial areas.

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